Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China
文献类型：期刊论文
| 作者 | Li Jun1 ; Liu Changming2
|
| 刊名 | Water Science and Engineering
 |
| 出版日期 | 2017 |
| 卷号 | 10期号:1页码:36 |
| ISSN号 | 1674-2370 |
| 英文摘要 | Considering the fact that the original two-parameter LCM model can only be used to investigate rainfall losses during the runoff period because the initial abstraction is not included, the LCM model was redefined as a three-parameter model, including the initial abstraction coefficient λ, the initial abstraction Ia, and the rainfall loss coefficient R. The improved LCM model is superior to the original two-parameter model, which only includes r and R, where r is the initial rainfall loss index and can be calculated with λ using the Soil Conservation Service curve number (SCS-CN) method, with r=1/(1+λ). The trial method was used to determine the parameter values of the improved LCM model at the watershed scale for 15 flood events in the Hongde Basin in China. The results show that larger r values are associated with smaller R values, and the parameter R ranges widely from 0.5 to 2.0. In order to improve the practicability of the LCM model, r=0.833 with λ=0.2 is reasonable for simplifying calculation. When the LCM model is applied to arid and semi-arid regions, rainfall without yielding runoff should be deducted from the total rainfall for more accurate estimation of rainfall-runoff. |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/98341]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.中国科学院成都山地灾害与环境研究所 2.中国科学院地理科学与资源研究所 |
| 推荐引用方式 GB/T 7714 | Li Jun,Liu Changming. Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China[J]. Water Science and Engineering,2017,10(1):36. |
| APA | Li Jun,&Liu Changming.(2017).Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China.Water Science and Engineering,10(1),36. |
| MLA | Li Jun,et al."Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China".Water Science and Engineering 10.1(2017):36. |
入库方式： OAI收割
来源：地理科学与资源研究所
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